Metal feeder for type-casting machines



March 4, 1924.8 1,486,086

J. F. GRAES'SLE METAL FEEDER FOR TYPE CASTING MAQHINES Filed F eb. 5, 1921 2 Sheets-Sheet 1 1N VEN T OR.

, March 4, 1924.

- 1,486,086 J. F. GRA ESSLE METAL FEEDER FOR TYPE CASTING MACHINES INVENTORJ A TTORNE Y.

one which, owin Patented Mar. 4, 192 4.

JULIUS F. GRAESSLE, OF FOND- DU LAO, WISCONSIN.

METAL r'nnnnn ron TYPE-CASTING mo Application filed February 5, 1921. Serial no. 44am.

' To all whom it may concern.- I

Be it known that I, JULIUs F. GRAnssLn, a citizen of the United States, residing at Fond du Lac, in the county of Fond du 55 Lac and State of Wisconsin, have invented new and useful Improvements in Metalj' Feeders Y for Type-Casting Machines, of

which the followin is a specification. This invention re atesto type casting machines and more particularly to means for feeding metal to the metal pot of such a machine.

An object of the invention is toprovide a mechanism for automatically feeding metal 16 to the metal pot of a type casting machine which is automatically operated by the operation of the type casting-machine and the operation of which is controlled by the level 0 the molten metal in the metal pot.

Another ob'ect of this invention is to provide a metal eeding mechanism as specified which requires no attention when once it is adjusted, does not require an extra burner, feeds metal to the pot onlywhen'the machine is in operation and then only at such the pot. falls below the desired point, and .to its manner of feeding permlts the maintaining of an times as the level of the molten metal in the metal,

all times producing solid slugswith clear faces." r

Other objectsof the invention are to ro- I ride a metal feeding mechanism as speclfied 85 which is simple in construction, easily accessible, does not in any wa interfere with the automatic stop ing of the pawls or anya of the delicate wor ing parts of metal casting machines and cheirged when necessary in a very. short time an w1th the. minimum amount of work. Other ob'ects will appear in the follow-. ing details p'anying drawings wherein:

Fi 1 is a side elevation of meta feedin mechanism.

Fig. 2 isa ront elevation of the improved feeding mechanism. Q Fig. 3 is a detailed perspective of a clamp used in attaching the metal feeding mechanism to a type casting machine.-

the improved Referring more particularly to the drawing, the improved metalfeedmgmechanism illustrated is particularly designed for use -member 6 connected thereto, which flexible ,mounted upon a rod 10, which is su practical use this- I relatively long and weig even temperature of the metal in thepot at one which can be re-.

description and in the acco'm--' which engages apin 17 exten ment with the pin .17.

casting machine without requiring the dr1 ing of holes in the machine.

A shaft 5 is rotatably supported by the supporting structure 1 and as a flexible member may be either a chain, cable, or the like, theflexible member 6' passes u ward from. the shaft 5 about a sheave p ey 7 carried by the rod 8 at the top of the frame 1 and over a second sheave 9 rotatably ported at the top of the frame 1 outward from, the sheave 7. Ametal carrying hoo 11 is connected to the free end of the flexible member 6," preferably by a swivel 12 and this hook is adapted to engage through the eye 13 in a bar or gig 14 0 type metal. Inv

ar or' plig 14 of metal is s approximately 30 to 35 pounds so as to provide metal sufiicient for a relatively long time of operation of the type casting machi making it necessaryto rechar e the met 1 feedin mechar nism only at re atively long interva s, thereby allowlng the operator uninterrupted work at the keyboard and makingit unnecessary for him molten metal therein and to replenish the supply as in the ordinary machine when the metal is fed into the pot manually by the operator.

Theshaft 5 has an escapement disc 15 rotatably mounted thereon and connected to the shaft forrotationtherewith a pawl 16 v diamet rically through the shaft; A spring 18 is provided to maintain the pawl 16 in engage e escapement dlsc 15 has a plurality of laterally extending circumferentially spaced pins 19' attached I thereto at predetermined intervals about acircle concentric of the axis of the disc. An escapement'lever 20 is provided for cow to look into the metal pot every few minutes to determine the level of the projection 32 on its lower end which is position with the pins 19- and this escapement lever2O is carried by the escapement shaft 21 and has a pin 22 on its free end which engages against one of the pins 19 for holding the escapement disc against rotation under the weight of the metal bar or 1 wi nding' action of the flexible member (3 from the shaft 5 and also prevent the feeding of metal bar into the metal pot 23 ot a type casting machine. A lever arm 24 is attached to the escapement shaft 21 and has as ring 25 connected thereto which urges an normally holds the pin 22 in engagement with one of the lateral studs or pins 19. An operating lever 26 is connected to the escapement shaft 21 and has an arm 27 connected thereto. The arm 27 is in turn connected'to a lever 28 pivoted, as shown at 29, to the base 30 of the frame 1 and carrying a plate 31. The plate 31 has a lateral tioned in the path of the first elevator cam chine as indicated at 34. When the stud 33 engages the plate or bracket 31, the rotation of the cal-n34 will rock the lever 28, which in turn operates the escapement mechanism to move the pin :22 out of engagement with the pin 19 permitting the escapement disc 15, and consequently the a stud 33 carried by of a linotype-mashaft 5, to rotate one step in its complete revolution.

The; operation of the esca-pement mechanism 1s relatively quick sothat the pin'22 will be out of the path of the pins 19 only long enough to permit the pin 19 with which it has been in engagement, to pass the normal position of the pin 22 after which the spring 25 will act to movethe pin 22 into position in engagement with the next subsequent pin 19 on the disc '15 thereby permitting only a predetermined step movement of the escapement mechanism and of the metal pig 14 into the metal pot 23.

However, it is not necessary to feed metal into the. metal pot 34 makes a complete rotation and consequently operates the.- lever 28, therefore, to prevent excessive feeding of metalinto the pot, means, preferably by the variation of the level of the molten metal in the metal pot 23, has been providedfor controlling the feeding of the metal pig 14.

The control mechanism ad'ustment ineludes a brake band 35 mounted about the perimeter of the escapement disc 15. The brake band 35 'is preferably lined with a band 36 of friction material such as leather or the like to permit firm braking action of the brake band upon the disc 15. One end of the brake band 35 is connected to the supporting frame lwhile the other end is connectedto a pin 37. The pin 37 is in turn connected to a brake lever 38, the amplitude 14 and consequently prevent the undisc 15 to prevent 23 every time the cam rotation of the disc, a e'scapement dlsc, a lever for moving said ineaoee of movement or which is limited by an adjustable stop screw 39.

A lever 40 is provided for operating the brake lever 38 .and the amplitude of movement of this lever 40 isregulated by adjustment ofan adjustable stop screw 41. A plate 42 is carried by the lever 40 and rides upon themolten metal as indicated at 43 in the metal pot 23 and when the metal is at its normal elevation the float is held in position to maintain the brake band 35 in braking engagement with the perimeter of the rotation of this disc when the pin 22 is moved out of engagement with a pin 19. As the elevation of the molten metal in the metal pot 23 lowers the float moves downwardly therewith and unlocks the lever '40 for releasing the brake 35 to ermit the disc 15 to rotate and allow feedmg of the metal pig l4'into the metal pot 23 and this feeding'operation is continued in step by step formation at predetermined intervals upon the movement of the pin 22 out of engagement with the respective pins 19 until the molten metal in the pot 23 has reached is normal or desired level. I

A hand crank 47 is mounted on the shaft 5 and when it is desired to place a newqmetal pig or bar 14 upon the hook 11, the pawl 16 is released from engagement with the pin 17 and the shaft 5 is manually rotated to wind the flexible member 6 thereon and draw the hook 11 upwardlyto its starting or initial position.

lit is, of course, to be understood that the invention may be constructed Zin various other manners and the pants associated in diii'erent relations and, therefore, l donot desire tojbe limited in any mannerexcept as set forth in the claims hereunto appended.

ll-laving thus described my ll claim is:

1. In a metal feeding mechanism, a feeding shaft, an escape-ment disc rotatable thereon, a spring actuated pawl pivotally carried by said escapement disc, means on said shaft engaged by said pawl for connecting the disc to the shaft, an .escapement mechanism including a lever arm, an escape ment lever operated by said arm, a pin carried by said escapement lever for cooperation with said escapement disc to control brake band about said brake band into and out of braking position, and a float operated lever for controlling pperation of said brake band operating ever.

ing shaft, an. escapement' disc rotatable 2. In a metal feeding mechanism, a feed-.

thereon, a spring. actuated pawl pivotally carried by said escapement disc, means on said shaft engaged-by said pawl for connecting the disc to the shaft, an escapement mi anism including a,- lever a, an escapement lever opera/tedbysaid arm, a pin tion ofsaid brake band-operating lever and carried by said escapement lever .for ,c0op-. .means connecting said brake'operating lever eration with saidescapement disc to' control and float operated lever whereby the relative 10 rotation of the disc, a brake band about said amplitude of movement of the levers may 5 escapement disc, a lever for moving said be'regula'ted. I brake band into and out of braking position, v In testimony whereof 'I'aflix in Si ature. a float operated lever for eontrollmg open JULIUS F .GR EfiLE. v 

